I'm having trouble getting mDNSResponder to work. When I try to start it up, I get the error:

mDNSResponder: error while loading shared libraries: libmDNSResponder.so.0: cannot open shared object file: No such file or directory

It's there. It really is. I checked. I have even added /var/lib/install/usr/lib to /etc/ld.so.conf (I did that for vim), so there shouldn't be a problem.